Liquid-fuel burner



J. D. AND G. C. GOODWIN.

LIQUID FUEL BURNER.

APPLICATION FILED OCT. 25. 1918.

Patented Sept. 7, 1920.

3 SHEETS-SHEET l.

v gnvm-lfoz James D. Goodwin and.

Grover C. Goodwin.

J. D. AND G. C. GOODWIN.

LIQUID FUEL BURNER.

APPLICATION FILED ocr. 25, 1918.

3 SHEETS-SHEET 2.

GroverGGoodwim I Q {I 61mm,

Patented Sept. 7, 1920.

J. D. AND C. GOODWIN.

LIQUID FUEL BURNER.

APPLICATION FILED OCT. 25, I918.

Patented Sept. 7, 1920.

a SHEETS-SHEET 3.

gnve'wroc James D. Goodwin and Grover C. Goodwin.

nniren STATES PATENT OFFICE.

JAMES D. GOODWIN' AND GROVER C. GOODWIN, 0F RICHMOND, VIRGINIA.

Application filed October 25, 1918.

To all whom it'mm concern:

Be it known that we, JAMES D. GOODWIN and Gnovnn C. Goonwin, citizens of the United States of America, residing at Riclr mond, in the county oi Henrico and State of Virginia, have invented certain new and useful Improvements in Liquid-Fuel Burn ers, which the following is a specification, reference being'had therein to the acconipanying drawing. 7

The present invention relates to liquid fuel burners and especially to a combinea'l vaporizer and burner for use in stoves or other heating devices.

An object of the invention is to provide a multiple burner arranged as a unitary device adapted to be readily installed in existing types of solid fuel stoves.

Another object of the invention is to provide a burner which will be highly efiicient in o aeration and at the same time simple in structure and capable of being easily understood and cared for by unskilled persons.

Various other objects of the invention will be apparent from a perusal of the following specification and the drawings accompanying the same.

The invention is illustrated in the accompanying drawings in which Figure l is a side elevation of a multiple unit burner embodying the invention.

Fig. 2 is a top plan view of the same.

Fig. 5 is a top plan view of one of the burner elements, on a larger scale.

a is a section on the line 4l-% ot' with the vapor nozzle shown solid.

5 is a side elevation of the burner i is a sectional view of the top burner alien through theaxis oi the ring.

n r. rings.

vment shownythe several priming pans 4 are Specification of Letters Patent.-

. 7 is a similar view of one of the lower Patented Sept. '7, 1920.

Serial No. 259,665.

cast integral with connecting webs 7, to form a common base. Extending from one end of the group of burner elements is an arm 8 at the outer end oi" which are mounted the control valves 9 and cleaner cranks 10, one for each burner elemen. The inlet sides of the valves 9 are connected with a suitable source of fuel supply through manifold or distributer connection 11 while from the outlet sides of the valves indi vidual tubes 12 lead to the different bur elements. The cleaning cranks 10 are connected with the cleaner operating rods 13 which connect through universal joint connections 14 with the shafts 15 of the vapor nozzle cleaning devices to be later described. The arm 8 is made sufficiently long to enable the burner to be installed within the tire box: of a stove with the arm 8 projecting through the door opening to the outside where the control devices may be operated with convenience. To reduce the labor required where it is necessary to make spe ial openings in the stove or stove doorto accommodate the arm 8 and control connections 12 and 13, the feed tubes 12 are extended from the valves 9 to the group or burners alo parallel lines, the middle tube extending directly above the arm 8, while the operating rods 13 are arranged substantially in the vertical planes of therespective feed tubes, thus requiring only three vertical slots to accommodate the supporting arm-and control connections.

As the burner elements are identical in structure, a detail showing and description or one will sui'ficc, f )le the element 1. The pillars are three in number for each burner clement each pillar terminating its upper end in a tapered linger 3.6 with a shoulder 17. The burner head base 18 is provided with sockets 19 arranged to engage the fingers 16 to properly center the burner base over the priming pan and hold it against lateral and rotary displace nt. while i is supported at a given distance above the primi g pan by the engagement of the shoulders 17 with the bottom of the base. it is preferable to arrange pillars 6 unsymmetrically so that the burner base may be placed thereon in one given angular position only.

The burner base 18 is fgrmed with a central double flared throat 21 and outer annular channel portion 22 with a vertical wall or flange 23 upon which rest the burner rings 24 and 32 and the cover member forming the upper part of the burner head.

A vapor generating pipe 26 is positioned around the burner head supported on brackets 27 formed on the burner base 18. This generating pipe 26 is connected with the oil supply tube 12 through the union; 28 and with the vapor nozzle 29 through a connecting tube 30. The vapor nozzle is positioned with-its aperture 3i in the axis of the flared throat 21. of the burner head so as to direct the vapor upwardly therethrough and produce anejector effect. By shaping and pro portioning the flared throat 21 and positioning the vapor nozzle 29 substantially as shown, this ejector effect is such as to cause the properproportion of air to be siphoned up into the burnerhead, the amount of air varying according to the amount'oi vapor injected, keeping the mixture substantially uniform so that the rate of fuel supply may be varied within certain limits without changing the efliciency of the burner.

The vapor nozzle 29 is provided with a suitable cleaning device, shown in dotted lines in Fig. '4, which consists of a'plunger pin 33 operated by an eccentric 34 carried on an operating rod 15, the parts being so arranged that when the operating rod 15 is rotated, the eccentric 34 will operate to work the plunger pin 33 up and down through the orifice 31, thus clearing it of any obstruction. The plunger pin 33 should be allowed to remain normally in its lowermost position as shown in dotted lines in Fig. 4 so as to leave the orifice 31 open and to indicate this condition to the operator the parts are so arranged that the operating crank 10 will be in its lowermost position, as indicated in Fig. 1, when the pin 33 is in its lowermost position. It is preferable to make the handle of the operating crank 10 sufliciently massive to restore it to its lowermost position after operation or accidental displacement.

The side walls of the burner head are formed by a plurality of rings 24 and 32 provided with spacing teeth 43 to form hori- Zontal openings or slots 34 in the outer wall of the burner head. In order to avoid having to form spacing teeth on the lower edge ofthe cap portion 35, the upper ring 32 is provided with spacing teeth 43 on both its upper and lower edges, the lower rings 24 being provided with spacing teeth on their lower edges only. It is necessary that'the base 18, cap piece 25 and the intermediate rings be held together concentrically and this is accomplished by means of the complementary locking fingers and sockets 35 and 36 respectively formed on the engaging members, the top ring 32 having projecting fingers 35 formed near both its upper and lower edges while the remaining lower rings 24 have the projecting fingers at their lower edges only, complementary sockets 36 being formed near the lower edge of the cap piece 25 and the upper edges of the rings 24 and channel portion 22. It is preferable tohave the slots 34 in staggered relation to each other as indicated in Figs. 1 and 5 and to insure this the fingers 35 are unevenly spaced around the rings as indicated in Fig. 8 so that the parts will lock together only in a predetermined relative position. To afford thorough mixing of the air and vapor the cap member 25 is formed with a depression in the center to form a circular arch-shaped mixing chamber 37 above the slots 34, the upper walls of the mixing chamber being formed substantially parallel to the curvature of the upper flared portion of the throat 21. Where it is desired to increase or diminish the capacity of the burner head i may use more or less than two rings 24 without changing any of the other parts The brackets 27 are so arranged that the generating pipe 26 will be positioned in the plane of the lowermost set of slots 34, or those formed between the upper edge of the channel member 22 and the lower edge of the lowermost ring 24.

F or the purpose of priming, the bottom of the priming pan 4 is provided with an annular gutter 38 in which is laid a wick 39 preferably of asbestos, the bottom of the pan 4 being arranged to slope from the center downwardly to the gutter 38 so that oil overflowing the aperture 31 will fall into the pan and drain down to the priming wick.

In Figs. 9 and 10 is shown a modified form of cap for the burner head which may be used in place of the cap member 25 and intermediate rings 32 and 24, in which case the flange 23 shown in Fig. 4, would be omitted from thebase member 18. In this modified form the slots 40 correspond to the slots 34 in the form previously described and in both forms these slots should have have a thickness of a little over 1/64 of an inch and an aggregate length of approximately 36 inches, although this may be "aried according to the purpose for which the burner is to be used.

The form of the invention'herein shown is especially designed for installation in a range or cook stove in which case the base, consisting of the integrally cast drip pans 4, rests upon the grate with the arm 8, carrying the control devices, projecting out through an, existing opening such as the door usually provided in front of the grate, or a suitable opening especially provided.

The operation of the invention is as follows: Assuming the device to have been properly installed in the fire box of a stove and the manifold 11 connected with a suitable source of fuel supply under suflicient pressure, the control valves 9 are opened sufficiently to permit oil to flow through the manifold 11, supply pipes 12, up into the vaporizing coils 26, down through the connecting pipes 30, up through the nozzles 29 and overflow into the drip pans 4. The oil flowing into the drip pan drains down into the groove 38 wetting the wick 39 which is then lighted. The flame and hot gases rising from the wicks 39 cause their respective generating tubes 26 to be heated to the vaporizing temperature of the oil used whereupon the vapor generated in the pipes 26 passes through the connecting pipes 30 to the nozzles 31 from whence it is projected up through the flared intake throats 21 into the mixing chambers 37 of the burner heads carrying with it a sufficient quantity of air which air and vapor are thoroughly mixed in the mixing chambers 37 and forced out of the slots 3 k in the burner heads; The combustible mixture of air and gas issuing from the slots 34 is ignited by the flame from the priming wick 39. The generating pipe 26 is now heated by the flame from the lowermost row of slots 34:. The operator seeing the flame from the burner head well developed, throt tles down the oil supply by manipulating the control valve 9 of each burner so that the rate of supply will not be greater than that of vaporization. As the fuel supply now issuing from the nozzle is all in the form of vapor and is all projected up into the burner head, the priming wick is deprived of further supply of fuel and its flame becomes extinguished. When it is desired to slightly reduce the amount of heat being generated one or more of the control valves 9 may be adjusted to further slightly reduce the supply of fuel, but when a substantial reduction in the amount of heat is required it is found more economical to entirely shut off one or more of the burners, which may be again easily started, without the use of the priming wick, by the heat supplied from the adjacent burner, which convenience is afforded by the manner in which the burner elements are combined and arranged.

When, during the operation of the device, the orifice of any of the vapor nozzles becomes cloggedfrom the deposition of carbon or other causes, the crank 10 is operated to clear the orifice in the manner previously described, after which the crank is restored to its normal or lowermost position as shown in Fig. 1.

It is to be noted that the bottom edges of the brackets 27 are made to slant inwardly and downwardly to a point above the priming pan l so that any oil or condensate that might run out onto these brackets will drip down into the priming pan.

Having thus described our invention what we claim and desire to secure by Letters Patent is:

l. A liquid fuel burner comprising a tubular base portion having its inner surface flared outwardly toward the lower end and the upper walls flared outwardly then downwardly to form an encircling outer wall then outwardly to form an annular horizontal bottom partition and upwardly to form a short annular vertical wall or flange surrounding the whole, a plurality of rings arranged to rest upon the upper edge of the said vertical flange portion, a cap member arranged to rest upon the uppermost ring and inclose a space above the lines of juncture between said cover member, rings and base member, spacing means carried by said rings arranged to space them apart from each other and from the cover member and base member to form jet openings or slots therebetween, a vapor generating pipe surrounding the base member and supporting brackets therefor carried by the base member and arranged to hold the generating pipe in the plane of the jet openings between the bottom ring and the vertical flange portion of the base member, and a nozzle connected with said generator pipe and arranged to direct a jet of vapor through the said tubular portion of the base member into the space inclosed by said cover member.

A liquid fuel burner as defined in claim 1 having a priming pan, means for supporting the said base member and said nozzle above said pan, said pan having an annular groove formed in its bottom near the sides and the bottom elevated in the center to cause liquid falling thereon to drain into the groove, and apriming wick arranged in said groove.

In testimony whereof we affix our signatures.

JAMES D. GOODVVIN. GROVER C. GOODVVIN. 

